LAMBTON DOORS ArchCat V14 Spt 2019

Contribution of the life cycle stages The contribution of life cycle stages of the 5-PC-ME/CE/BE door to total environmental impacts is presented in Figure 4.

100%

1. Raw materials acquisition 2. Product manufacturing 3. Packaging 4. Distribution 5. Use 6. End-of-life

80%

60%

40%

20%

0%

Global warming Ozone depletion Figure 4 : Contribution of life cycle stages to total environmental impacts - 5-PC-ME/CE/BE Acidification Eutrophication Smog

Raw materials acquisition is responsible for more than 60% of the impacts in four (4) impact categories. End-of-life is responsible for more than 80% of the impact on eutrophication. The impact on GWP does not take into account the GWP credit due to carbon sequestration in wood products: only GHG emissions emitted during the product life cycle are represented, which corresponds to an impact of 83 kg CO2 eq. Figure 5 and Figure 6 present the energy consumption from the different life cycle stages of the 5-PC-ME/CE/BE door. Raw materials acquisition is the most energy-consuming stage (>60%), regardless of energy sources. Figure 7 shows that 63% of the energy demand for 5-PC-ME/CE/BE doors comes from renewable sources. Finally, raw materials acquisition is responsible for 87% of life cycle water intake, as shown in Figure 8.

100%

1. Raw materials acquisition 2. Product manufacturing 3. Packaging 4. Distribution 5. Use 6. End-of-life

80%

60%

40%

20%

0%

NRR - Fossil

NRR - Nuclear

RR - Biomass

RR - Other renewables

Figure 5 : Contribution of life cycle stages to the energy demand- 5-PC-ME/CE/BE. Abbreviations “NRR” stands for non-renewable resources and “RR” stands for renewable resources.

10